string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E5%81%9A%E4%BB%80%E4%B9%88%E6%8A%95%E8%B5%84%E5%B0%8F => Failed to connect to 101.89.159.206 port 38075: Connection refused"
现在做什么投资小
